  TABLE 3 ESTIMATES OF 13-MONTH SMOOTH SOLAR ACTIVITY FOR
  BALANCE OF CYCLE 25 WITH A MEAN CYCLE GIVEN FOR CYCLE 26

    TIME         10.7 CM SOLAR FLUX   (F10.7)      GEOMAGNETIC INDEX   (Ap)
                         PERCENTILE                    PERCENTILE
                  95.0%       50%      5.0%     95.0%       50%      5.0% 

 2020.5837   AUG    75.5      74.9      74.1       5.7       5.2       5.0
 2020.6670   SEP    77.4      75.9      74.4       5.8       5.2       4.8
 2020.7503   OCT    80.3      77.1      74.9       6.4       5.4       4.9
 2020.8337   NOV    83.4      78.6      75.9       7.2       5.7       4.8
 2020.9170   DEC    86.3      80.4      77.4       7.7       5.8       4.6
 2021.0003   JAN    89.1      82.2      78.4       7.8       5.8       4.2
 2021.0837   FEB    92.5      84.4      79.3       8.4       5.9       4.0
 2021.1670   MAR    96.7      86.8      80.3       9.0       5.9       3.7
 2021.2503   APR   101.2      89.4      81.1       9.8       6.0       3.2
 2021.3337   MAY   106.6      92.3      82.5      10.9       6.2       3.1
 2021.4170   JUN   113.0      95.3      84.6      11.9       6.5       3.2
 2021.5003   JUL   119.1      98.4      85.3      12.1       6.7       3.2
 2021.5837   AUG   124.7     101.6      86.0      12.1       6.9       3.2
 2021.6670   SEP   129.6     104.8      87.5      11.5       6.9       3.2
 2021.7503   OCT   134.5     107.9      89.3      10.9       6.7       3.3
 2021.8337   NOV   140.5     111.1      91.1      10.3       6.6       3.5
 2021.9170   DEC   147.5     114.5      92.6       9.9       6.7       3.5
 2022.0003   JAN   154.9     118.3      93.8       9.9       6.8       3.8
 2022.0837   FEB   162.7     122.0      95.3       9.9       7.1       4.7
 2022.1670   MAR   171.3     125.7      96.6      10.2       7.5       5.3
 2022.2503   APR   179.6     129.1      98.6      10.1       7.8       5.6
 2022.3337   MAY   185.1     132.7     101.0      10.1       8.0       5.7
 2022.4170   JUN   188.4     136.1     103.1      10.7       8.2       5.2
 2022.5003   JUL   191.5     138.5     104.3      11.5       8.5       4.9
 2022.5837   AUG   195.1     140.9     104.7      11.7       8.6       4.8
 2022.6670   SEP   200.0     143.4     105.4      12.2       9.0       5.0
 2022.7503   OCT   206.5     146.2     107.2      13.1       9.5       5.3
 2022.8337   NOV   211.8     148.9     108.3      13.9       9.7       5.0
 2022.9170   DEC   215.4     151.3     108.8      14.3       9.8       4.7
 2023.0003   JAN   219.8     153.2     110.1      14.8      10.2       4.5
 2023.0837   FEB   224.4     154.9     113.1      15.4      10.4       4.2
 2023.1670   MAR   227.3     156.4     116.2      15.7      10.5       4.2
 2023.2503   APR   229.5     157.8     119.5      16.2      10.5       4.4
 2023.3337   MAY   231.6     158.9     123.2      17.2      10.6       4.4
 2023.4170   JUN   233.1     159.6     123.2      17.4      10.6       4.5
 2023.5003   JUL   234.9     159.9     121.6      16.8      10.7       4.9
 2023.5837   AUG   237.7     159.9     120.2      16.5      10.8       5.3
 2023.6670   SEP   238.7     160.0     119.0      16.0      10.8       5.5
 2023.7503   OCT   237.9     160.2     120.7      15.4      10.5       5.5
 2023.8337   NOV   237.0     160.0     121.8      15.3      10.6       5.7
 2023.9170   DEC   237.5     159.6     122.6      15.1      10.6       5.9
 2024.0003   JAN   237.0     158.8     122.6      14.4      10.4       5.6
 2024.0837   FEB   233.8     157.5     120.7      13.6      10.3       5.9
 2024.1670   MAR   230.1     156.6     118.9      12.8       9.8       6.0
 2024.2503   APR   226.5     156.2     116.2      12.4       9.3       5.8
 2024.3337   MAY   224.4     156.5     114.0      12.5       9.1       5.6
 2024.4170   JUN   223.8     156.8     112.7      13.5       9.1       5.3
 2024.5003   JUL   222.8     156.7     111.3      14.4       9.1       5.2
 2024.5837   AUG   220.8     156.3     107.9      14.9       9.2       5.4
 2024.6670   SEP   218.9     155.9     104.6      15.6       9.2       5.3
 2024.7503   OCT   218.0     155.4     101.2      15.7       9.2       5.2
 2024.8337   NOV   218.1     155.2      99.9      15.3       9.4       5.6
 2024.9170   DEC   218.5     154.7      99.0      15.0       9.3       5.5
 2025.0003   JAN   217.3     153.8      97.6      14.0       9.1       5.8
 2025.0837   FEB   214.2     152.6      96.6      13.5       9.1       5.8
 2025.1670   MAR   211.3     150.8      94.8      13.5       9.4       6.6
 2025.2503   APR   208.6     149.2      94.0      14.4       9.7       6.8
 2025.3337   MAY   205.8     147.8      91.9      14.6       9.9       7.0
 2025.4170   JUN   202.1     146.5      91.0      15.0      10.3       6.9
 2025.5003   JUL   199.2     144.7      90.7      15.5      10.5       7.2
 2025.5837   AUG   195.6     142.7      90.7      14.7      10.3       7.0
 2025.6670   SEP   191.2     140.3      91.0      15.0      10.4       6.8
 2025.7503   OCT   187.8     138.1      91.6      15.6      10.7       6.9
 2025.8337   NOV   184.6     136.2      91.8      15.6      10.8       6.8
 2025.9170   DEC   181.7     134.6      92.3      15.4      10.8       6.7
 2026.0003   JAN   178.8     132.6      93.1      15.5      10.9       6.6
 2026.0837   FEB   175.1     130.5      92.9      15.6      11.2       6.5
 2026.1670   MAR   171.4     129.1      92.6      14.9      11.6       7.1
 2026.2503   APR   168.7     127.8      92.3      14.9      12.0       7.6
 2026.3337   MAY   166.3     126.3      91.9      15.6      12.3       8.4
 2026.4170   JUN   164.2     124.5      91.3      16.0      12.6       8.3
 2026.5003   JUL   160.4     122.4      90.9      15.9      12.9       8.7
 2026.5837   AUG   154.7     120.2      90.9      16.3      13.1       9.2
 2026.6670   SEP   149.3     118.3      89.8      17.6      13.1       9.3
 2026.7503   OCT   145.7     116.4      88.4      18.3      13.0       9.4
 2026.8337   NOV   143.1     114.5      87.3      18.6      13.3       9.7
 2026.9170   DEC   141.0     112.8      86.2      18.8      13.5       9.8
 2027.0003   JAN   138.3     111.3      85.5      19.2      13.6       9.9
 2027.0837   FEB   134.9     109.6      84.9      18.9      13.5       9.3
 2027.1670   MAR   131.8     107.9      84.7      19.0      13.4       9.1
 2027.2503   APR   128.9     106.2      83.6      19.5      13.3       9.1
 2027.3337   MAY   126.0     104.4      82.2      19.7      13.1       8.6
 2027.4170   JUN   124.7     102.4      80.7      20.0      12.7       7.6
 2027.5003   JUL   124.4     100.8      79.7      20.5      12.3       6.7
 2027.5837   AUG   123.7      99.5      78.3      21.1      12.1       6.7
 2027.6670   SEP   123.3      98.2      77.4      21.6      12.0       6.8
 2027.7503   OCT   122.2      97.0      76.8      22.0      12.1       6.8
 2027.8337   NOV   120.2      96.1      76.6      21.7      11.8       6.8
 2027.9170   DEC   118.5      94.9      76.0      21.1      11.6       6.9
 2028.0003   JAN   117.3      93.6      75.1      20.2      11.4       6.4
 2028.0837   FEB   116.2      92.3      74.3      19.5      11.4       6.0
 2028.1670   MAR   114.5      91.1      73.4      19.4      11.7       5.8
 2028.2503   APR   111.3      89.9      73.0      19.0      11.8       5.1
 2028.3337   MAY   107.6      88.5      72.7      18.9      12.1       4.7
 2028.4170   JUN   104.4      87.4      72.4      18.7      12.3       4.7
 2028.5003   JUL   102.7      86.5      72.0      18.2      12.4       5.3
 2028.5837   AUG   101.4      85.5      71.7      18.4      12.3       5.7
 2028.6670   SEP    99.1      84.5      71.4      18.6      12.2       6.1
 2028.7503   OCT    97.6      83.4      71.0      18.7      12.0       6.0
 2028.8337   NOV    95.7      82.4      70.9      18.5      12.0       6.2
 2028.9170   DEC    94.8      81.8      70.9      18.3      12.1       6.5
 2029.0003   JAN    94.1      81.1      70.9      18.1      12.5       7.0
 2029.0837   FEB    93.3      80.5      71.0      17.5      12.7       7.3
 2029.1670   MAR    91.5      79.8      70.9      16.7      12.7       7.3
 2029.2503   APR    90.1      79.1      70.8      16.7      12.4       7.1
 2029.3337   MAY    89.2      78.5      70.6      16.7      12.1       6.9
 2029.4170   JUN    88.1      77.8      70.5      16.7      11.9       6.5
 2029.5003   JUL    87.2      77.2      70.3      16.8      11.8       6.0
 2029.5837   AUG    86.4      76.6      70.1      17.3      12.0       6.0
 2029.6670   SEP    85.0      76.0      70.0      17.7      12.0       6.4
 2029.7503   OCT    83.6      75.5      69.7      17.6      11.9       6.6
 2029.8337   NOV    81.6      74.9      69.6      17.3      11.7       6.6
 2029.9170   DEC    79.7      74.2      69.3      17.0      11.4       6.4
 2030.0003   JAN    78.7      73.5      68.9      15.9      10.9       6.4
 2030.0837   FEB    77.9      72.9      68.5      14.3      10.3       6.3
 2030.1670   MAR    77.4      72.4      68.3      13.0       9.8       6.0
 2030.2503   APR    77.2      72.0      68.1      13.1       9.4       5.8
 2030.3337   MAY    77.0      71.7      68.0      12.8       9.0       5.7
 2030.4170   JUN    76.8      71.4      67.9      12.4       8.8       5.6
 2030.5003   JUL    76.0      71.1      68.0      12.3       8.7       5.5
 2030.5837   AUG    74.9      70.8      67.9      12.0       8.5       5.2
 2030.6670   SEP    73.7      70.5      67.7      11.3       8.3       4.7
 2030.7503   OCT    73.4      70.3      67.4      10.8       8.1       4.2
 2030.8337   NOV    73.0      70.1      67.3      10.6       7.9       3.9
 2030.9170   DEC    73.0      70.1      67.3      10.6       7.9       4.0
 2031.0003   JAN    73.1      70.2      67.3      10.9       8.1       3.8
 2031.0837   FEB    73.8      70.5      67.3      11.2       8.3       3.9
 2031.1670   MAR    74.7      70.9      67.4      11.4       8.4       3.8
 2031.2503   APR    75.4      71.2      67.5      11.6       8.6       3.6
 2031.3337   MAY    76.6      71.6      67.6      11.8       8.7       3.4
 2031.4170   JUN    78.3      72.1      67.7      11.9       8.8       3.4
 2031.5003   JUL    79.7      72.8      67.8      12.1       9.0       3.4
 2031.5837   AUG    81.0      73.5      67.9      12.4       9.2       3.3
 2031.6670   SEP    83.3      74.3      68.0      12.8       9.5       3.4
 2031.7503   OCT    86.2      75.3      68.1      13.2      10.0       3.7
 2031.8337   NOV    90.9      76.4      68.4      13.8      10.4       4.2
 2031.9170   DEC    95.1      77.8      68.5      14.6      10.6       4.5
 2032.0003   JAN    98.5      79.4      68.5      15.7      10.9       4.7
 2032.0837   FEB   103.6      81.1      68.5      16.1      11.1       4.8
 2032.1670   MAR   109.2      83.1      68.5      16.3      11.3       5.0
 2032.2503   APR   115.2      85.2      68.4      16.9      11.4       5.1
 2032.3337   MAY   122.0      87.5      68.6      18.0      11.6       5.3
 2032.4170   JUN   130.1      89.9      68.7      18.9      11.9       5.4
 2032.5003   JUL   136.6      92.5      69.0      19.1      12.1       5.6
 2032.5837   AUG   141.4      95.3      69.3      19.2      12.3       5.8
 2032.6670   SEP   145.9      98.1      69.4      19.0      12.6       6.0
 2032.7503   OCT   150.4     100.9      69.6      18.6      12.7       6.1
 2032.8337   NOV   155.4     103.7      70.1      18.5      12.7       6.1
 2032.9170   DEC   160.9     106.7      70.8      18.9      12.8       6.1
 2033.0003   JAN   166.3     109.8      71.0      18.8      12.9       6.3
 2033.0837   FEB   171.1     113.0      71.4      17.8      13.0       6.5
 2033.1670   MAR   177.2     116.2      71.7      17.9      13.2       6.7
 2033.2503   APR   184.3     119.3      72.3      18.4      13.4       7.1
 2033.3337   MAY   189.1     122.6      73.1      19.1      13.7       7.0
 2033.4170   JUN   192.1     125.6      73.5      19.6      14.2       7.0
 2033.5003   JUL   195.2     128.1      74.3      20.3      14.5       7.1
 2033.5837   AUG   198.1     130.2      74.9      20.3      14.5       7.2
 2033.6670   SEP   203.0     132.5      75.3      20.3      14.6       7.7
 2033.7503   OCT   208.8     135.1      75.8      20.5      14.7       8.1
 2033.8337   NOV   213.0     137.6      76.2      20.8      14.8       8.0
 2033.9170   DEC   215.9     139.9      76.5      21.2      14.8       8.0
 2034.0003   JAN   219.7     141.9      76.5      21.3      14.6       8.4
 2034.0837   FEB   223.3     143.7      76.5      21.4      14.6       8.6
 2034.1670   MAR   224.8     145.3      76.8      21.6      14.6       8.4
 2034.2503   APR   225.6     146.8      77.3      22.0      14.5       8.4
 2034.3337   MAY   228.0     147.9      77.8      22.7      14.4       8.6
 2034.4170   JUN   230.3     148.7      78.5      22.4      14.1       8.6
 2034.5003   JUL   233.0     149.3      79.8      21.3      13.8       8.5
 2034.5837   AUG   235.9     149.6      80.6      20.6      13.7       8.3
 2034.6670   SEP   237.0     149.9      81.6      20.1      13.6       8.0
 2034.7503   OCT   234.9     150.2      83.1      19.7      13.5       7.6
 2034.8337   NOV   232.6     150.3      84.6      19.6      13.5       7.5
 2034.9170   DEC   233.6     150.3      86.2      19.3      13.5       7.8
 2035.0003   JAN   234.0     149.6      87.0      19.1      13.7       7.7
 2035.0837   FEB   231.8     148.5      88.2      18.9      13.9       7.6
 2035.1670   MAR   228.8     147.7      89.8      18.9      14.0       7.5
 2035.2503   APR   225.5     147.5      90.9      19.5      13.9       7.2
 2035.3337   MAY   224.0     147.8      93.0      20.4      14.0       7.1
 2035.4170   JUN   225.0     148.2      94.3      22.0      14.4       7.1
 2035.5003   JUL   224.9     148.2      95.7      23.4      14.7       7.1
 2035.5837   AUG   223.7     148.0      96.0      24.0      14.9       7.3
 2035.6670   SEP   222.8     147.6      95.6      25.1      15.1       7.3
 2035.7503   OCT   222.5     147.2      95.5      25.7      15.3       7.0
 2035.8337   NOV   222.1     147.0      97.0      24.9      15.3       7.1
 2035.9170   DEC   221.5     146.6      97.8      24.8      15.3       6.7
 2036.0003   JAN   220.9     145.8      97.3      24.0      15.3       6.3
 2036.0837   FEB   218.8     144.6      96.5      22.2      15.3       6.1
 2036.1670   MAR   215.7     143.1      96.4      22.5      15.5       6.3
 2036.2503   APR   213.2     141.4      96.9      23.2      15.7       6.5
 2036.3337   MAY   210.6     140.0      96.4      23.2      15.7       6.7
 2036.4170   JUN   206.4     138.7      95.7      22.7      15.7       7.1
 2036.5003   JUL   203.6     137.2      96.3      22.0      15.6       7.6
 2036.5837   AUG   202.2     135.5      97.2      21.9      15.7       7.7
 2036.6670   SEP   198.5     133.5      96.3      22.7      15.9       8.1
 2036.7503   OCT   194.7     131.8      94.6      23.6      16.2       8.7
 2036.8337   NOV   192.8     130.4      93.8      23.8      16.4       8.9
 2036.9170   DEC   191.1     129.2      93.6      23.8      16.6       9.3
 2037.0003   JAN   187.6     127.5      91.8      23.8      16.6       9.7
 2037.0837   FEB   183.5     125.7      88.5      23.4      16.6      10.1
 2037.1670   MAR   179.5     124.4      88.0      22.5      16.5      10.5
 2037.2503   APR   175.8     123.3      88.7      22.7      16.4      10.7
 2037.3337   MAY   173.5     121.9      87.3      22.9      16.5      11.5
 2037.4170   JUN   171.4     120.3      86.3      23.0      16.6      11.7
 2037.5003   JUL   167.1     118.5      85.7      22.4      16.7      11.9
 2037.5837   AUG   160.7     116.7      84.9      21.5      16.5      11.9
 2037.6670   SEP   155.0     115.0      83.7      21.2      16.3      11.7
 2037.7503   OCT   151.3     113.1      82.7      21.7      16.1      11.4
 2037.8337   NOV   148.8     111.2      82.3      21.7      16.1      11.5
 2037.9170   DEC   146.2     109.6      82.2      22.1      16.1      11.4
 2038.0003   JAN   143.2     108.0      82.0      22.5      16.2      11.2
 2038.0837   FEB   139.6     106.4      81.0      22.3      16.2      11.0
 2038.1670   MAR   135.9     104.8      80.6      22.3      16.0      10.8
 2038.2503   APR   132.4     103.4      80.6      22.7      15.8      10.7
 2038.3337   MAY   128.4     101.8      80.0      22.9      15.5      10.6
 2038.4170   JUN   123.3     100.2      79.1      23.4      15.3      10.3
 2038.5003   JUL   119.4      98.7      77.7      24.0      15.0      10.1
 2038.5837   AUG   118.5      97.5      75.6      24.7      14.9      10.1
 2038.6670   SEP   118.7      96.3      74.6      25.3      14.8      10.1
 2038.7503   OCT   119.2      95.2      74.1      25.4      14.8      10.5
 2038.8337   NOV   119.5      94.3      73.8      25.3      14.7      10.4
 2038.9170   DEC   118.8      93.3      73.5      24.8      14.5      10.2
 2039.0003   JAN   117.3      92.1      73.1      23.9      14.3      10.0
 2039.0837   FEB   115.7      91.0      72.7      23.0      14.1       9.4
 2039.1670   MAR   113.5      90.0      72.0      22.5      14.2       8.8
 2039.2503   APR   110.0      89.0      71.4      22.1      14.2       8.1
 2039.3337   MAY   105.8      87.8      71.1      21.8      14.3       7.5
 2039.4170   JUN   103.2      86.8      70.8      21.4      14.5       7.4
 2039.5003   JUL   101.6      85.9      70.6      20.8      14.4       7.7
 2039.5837   AUG   100.1      85.1      70.6      20.0      14.3       8.1
 2039.6670   SEP    98.1      84.1      70.4      20.0      14.1       8.5
 2039.7503   OCT    96.5      83.0      69.9      20.2      13.9       8.5
 2039.8337   NOV    94.6      82.0      69.6      19.8      13.7       8.5
 2039.9170   DEC    93.5      81.3      69.5      19.4      13.6       8.4
 2040.0003   JAN    93.1      80.6      69.5      18.9      13.6       8.4
 2040.0837   FEB    92.3      80.0      69.3      18.2      13.6       8.1
 2040.1670   MAR    91.2      79.2      69.2      17.3      13.5       7.7
 2040.2503   APR    90.3      78.5      68.8      17.3      13.3       7.1
 2040.3337   MAY    89.5      77.8      68.6      17.4      13.2       6.8
 2040.4170   JUN    88.4      77.2      68.4      17.5      13.1       6.6
 2040.5003   JUL    87.4      76.6      68.4      17.5      12.9       6.5
 2040.5837   AUG    86.6      76.1      68.5      17.7      12.9       6.6
 2040.6670   SEP    85.2      75.6      68.5      18.0      12.7       6.5
 2040.7503   OCT    83.9      75.1      68.5      17.9      12.6       6.4
 2040.8337   NOV    82.0      74.6      68.4      17.6      12.3       6.4
 2040.9170   DEC    79.9      73.9      68.3      17.3      12.0       6.2
 2041.0003   JAN    78.4      73.2      68.0      16.3      11.7       6.1
 2041.0837   FEB    77.5      72.6      67.8      14.9      11.2       6.0
 2041.1670   MAR    77.0      72.1      67.7      13.8      10.9       6.1
 2041.2503   APR    76.9      71.8      67.6      13.9      10.5       6.2
 2041.3337   MAY    76.6      71.5      67.5      13.6      10.2       6.2
 2041.4170   JUN    76.5      71.1      67.3      13.2       9.8       6.0
 2041.5003   JUL    76.1      70.8      67.1      12.9       9.5       5.9
 2041.5837   AUG    75.1      70.5      67.1      12.6       9.3       5.8
 2041.6670   SEP    74.2      70.2      67.0      11.9       9.1       5.7
 2041.7503   OCT    74.0      70.0      67.0      11.4       8.9       5.2
